Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Hazardous Weather Conditions

Current conditions at

Logan County Airport (KAAA)

Lat: 40.16°NLon: 89.34°WElev: 591ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Mc Lean IL

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 10pm. Some of the storms could be severe.  Mostly cloudy, then gradually becoming clear, with a low around 60. West wind 11 to 16 mph, with gusts as high as 23 mph.

    Low: 60 °F

    Severe
    Thunderstorms
    then Mostly
    Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 74. West northwest wind 11 to 13 mph, with gusts as high as 22 mph.

    High: 74 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 55. Northwest wind 3 to 8 mph.

    Low: 55 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 78. Light west northwest wind increasing to 5 to 9 mph in the morning.

    High: 78 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 60. West northwest wind around 6 mph becoming calm  in the evening.

    Low: 60 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 81. West southwest wind 3 to 7 mph.

    High: 81 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 1am.  Partly cloudy, with a low around 62. West southwest wind 5 to 7 mph becoming east northeast in the evening.

    Low: 62 °F

    Mostly Clear
    then Chance
    Showers

  • Sunday

    Sunday: Showers likely, then showers and possibly a thunderstorm after 1pm. Some of the storms could produce heavy rainfall.  High near 77. Chance of precipitation is 90%.

    High: 77 °F

    Heavy Rain

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers.  Mostly cloudy, with a low around 60. Chance of precipitation is 70%.

    Low: 60 °F

    Showers
    Likely

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms, mainly before 10pm. Some of the storms could be severe. Mostly cloudy, then gradually becoming clear, with a low around 60. West wind 11 to 16 mph, with gusts as high as 23 mph.
Thursday
Mostly sunny, with a high near 74. West northwest wind 11 to 13 mph, with gusts as high as 22 mph.
Thursday Night
Mostly clear, with a low around 55. Northwest wind 3 to 8 mph.
Juneteenth
Sunny, with a high near 78. Light west northwest wind increasing to 5 to 9 mph in the morning.
Friday Night
Partly cloudy, with a low around 60. West northwest wind around 6 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 81. West southwest wind 3 to 7 mph.
Saturday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 62. West southwest wind 5 to 7 mph becoming east northeast in the evening.
Sunday
Showers likely, then showers and possibly a thunderstorm after 1pm. Some of the storms could produce heavy rainfall. High near 77. Chance of precipitation is 90%.
Sunday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.
Monday
Mostly sunny, with a high near 75.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
Mostly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
Mc Lean IL
 40.31°N 89.2°W (Elev. 699 ft)
7:46 pm CDT Jun 17, 2026
8pm CDT Jun 17, 2026-6pm CDT Jun 24, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database